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1.16 ! tb 1: /* $OpenBSD: s_cb.c,v 1.15 2021/04/02 10:19:19 inoguchi Exp $ */
1.1 jsing 2: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3: * All rights reserved.
4: *
5: * This package is an SSL implementation written
6: * by Eric Young (eay@cryptsoft.com).
7: * The implementation was written so as to conform with Netscapes SSL.
8: *
9: * This library is free for commercial and non-commercial use as long as
10: * the following conditions are aheared to. The following conditions
11: * apply to all code found in this distribution, be it the RC4, RSA,
12: * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13: * included with this distribution is covered by the same copyright terms
14: * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15: *
16: * Copyright remains Eric Young's, and as such any Copyright notices in
17: * the code are not to be removed.
18: * If this package is used in a product, Eric Young should be given attribution
19: * as the author of the parts of the library used.
20: * This can be in the form of a textual message at program startup or
21: * in documentation (online or textual) provided with the package.
22: *
23: * Redistribution and use in source and binary forms, with or without
24: * modification, are permitted provided that the following conditions
25: * are met:
26: * 1. Redistributions of source code must retain the copyright
27: * notice, this list of conditions and the following disclaimer.
28: * 2. Redistributions in binary form must reproduce the above copyright
29: * notice, this list of conditions and the following disclaimer in the
30: * documentation and/or other materials provided with the distribution.
31: * 3. All advertising materials mentioning features or use of this software
32: * must display the following acknowledgement:
33: * "This product includes cryptographic software written by
34: * Eric Young (eay@cryptsoft.com)"
35: * The word 'cryptographic' can be left out if the rouines from the library
36: * being used are not cryptographic related :-).
37: * 4. If you include any Windows specific code (or a derivative thereof) from
38: * the apps directory (application code) you must include an acknowledgement:
39: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40: *
41: * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51: * SUCH DAMAGE.
52: *
53: * The licence and distribution terms for any publically available version or
54: * derivative of this code cannot be changed. i.e. this code cannot simply be
55: * copied and put under another distribution licence
56: * [including the GNU Public Licence.]
57: */
58: /* ====================================================================
59: * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
60: *
61: * Redistribution and use in source and binary forms, with or without
62: * modification, are permitted provided that the following conditions
63: * are met:
64: *
65: * 1. Redistributions of source code must retain the above copyright
66: * notice, this list of conditions and the following disclaimer.
67: *
68: * 2. Redistributions in binary form must reproduce the above copyright
69: * notice, this list of conditions and the following disclaimer in
70: * the documentation and/or other materials provided with the
71: * distribution.
72: *
73: * 3. All advertising materials mentioning features or use of this
74: * software must display the following acknowledgment:
75: * "This product includes software developed by the OpenSSL Project
76: * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77: *
78: * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79: * endorse or promote products derived from this software without
80: * prior written permission. For written permission, please contact
81: * openssl-core@openssl.org.
82: *
83: * 5. Products derived from this software may not be called "OpenSSL"
84: * nor may "OpenSSL" appear in their names without prior written
85: * permission of the OpenSSL Project.
86: *
87: * 6. Redistributions of any form whatsoever must retain the following
88: * acknowledgment:
89: * "This product includes software developed by the OpenSSL Project
90: * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91: *
92: * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93: * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99: * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103: * OF THE POSSIBILITY OF SUCH DAMAGE.
104: * ====================================================================
105: *
106: * This product includes cryptographic software written by Eric Young
107: * (eay@cryptsoft.com). This product includes software written by Tim
108: * Hudson (tjh@cryptsoft.com).
109: *
110: */
111:
112: #include <sys/socket.h>
113:
114: #include <netinet/in.h>
115:
116: #include <netdb.h>
117: #include <stdio.h>
118: #include <stdlib.h>
119: #include <string.h>
120:
121: #include "apps.h"
122:
123: #include <openssl/err.h>
124: #include <openssl/ssl.h>
125: #include <openssl/x509.h>
126:
127: #include "s_apps.h"
128:
129: #define COOKIE_SECRET_LENGTH 16
130:
131: int verify_depth = 0;
132: int verify_return_error = 0;
133: unsigned char cookie_secret[COOKIE_SECRET_LENGTH];
134: int cookie_initialized = 0;
135:
136: int
137: verify_callback(int ok, X509_STORE_CTX * ctx)
138: {
139: X509 *err_cert;
140: int err, depth;
141:
142: err_cert = X509_STORE_CTX_get_current_cert(ctx);
143: err = X509_STORE_CTX_get_error(ctx);
144: depth = X509_STORE_CTX_get_error_depth(ctx);
145:
146: BIO_printf(bio_err, "depth=%d ", depth);
147: if (err_cert) {
148: X509_NAME_print_ex(bio_err, X509_get_subject_name(err_cert),
149: 0, XN_FLAG_ONELINE);
150: BIO_puts(bio_err, "\n");
151: } else
152: BIO_puts(bio_err, "<no cert>\n");
153: if (!ok) {
154: BIO_printf(bio_err, "verify error:num=%d:%s\n", err,
155: X509_verify_cert_error_string(err));
156: if (verify_depth >= depth) {
157: if (!verify_return_error)
158: ok = 1;
159: } else {
160: ok = 0;
161: }
162: }
163: switch (err) {
164: case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
165: BIO_puts(bio_err, "issuer= ");
1.4 doug 166: if (err_cert == NULL)
167: BIO_puts(bio_err, "<error getting cert>");
168: else
169: X509_NAME_print_ex(bio_err,
170: X509_get_issuer_name(err_cert), 0, XN_FLAG_ONELINE);
1.1 jsing 171: BIO_puts(bio_err, "\n");
172: break;
173: case X509_V_ERR_CERT_NOT_YET_VALID:
174: case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
175: BIO_printf(bio_err, "notBefore=");
1.4 doug 176: if (err_cert == NULL)
177: BIO_printf(bio_err, " <error getting cert>");
178: else
179: ASN1_TIME_print(bio_err, X509_get_notBefore(err_cert));
1.1 jsing 180: BIO_printf(bio_err, "\n");
181: break;
182: case X509_V_ERR_CERT_HAS_EXPIRED:
183: case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
184: BIO_printf(bio_err, "notAfter=");
1.4 doug 185: if (err_cert == NULL)
186: BIO_printf(bio_err, " <error getting cert>");
187: else
188: ASN1_TIME_print(bio_err, X509_get_notAfter(err_cert));
1.1 jsing 189: BIO_printf(bio_err, "\n");
190: break;
191: case X509_V_ERR_NO_EXPLICIT_POLICY:
192: policies_print(bio_err, ctx);
193: break;
194: }
195: if (err == X509_V_OK && ok == 2)
196: policies_print(bio_err, ctx);
197:
198: BIO_printf(bio_err, "verify return:%d\n", ok);
199: return (ok);
200: }
201:
202: int
203: set_cert_stuff(SSL_CTX * ctx, char *cert_file, char *key_file)
204: {
205: if (cert_file != NULL) {
206: /*
207: SSL *ssl;
208: X509 *x509;
209: */
210:
211: if (SSL_CTX_use_certificate_file(ctx, cert_file,
212: SSL_FILETYPE_PEM) <= 0) {
213: BIO_printf(bio_err,
214: "unable to get certificate from '%s'\n", cert_file);
215: ERR_print_errors(bio_err);
216: return (0);
217: }
218: if (key_file == NULL)
219: key_file = cert_file;
220: if (SSL_CTX_use_PrivateKey_file(ctx, key_file,
221: SSL_FILETYPE_PEM) <= 0) {
222: BIO_printf(bio_err,
223: "unable to get private key from '%s'\n", key_file);
224: ERR_print_errors(bio_err);
225: return (0);
226: }
227:
228: /*
229: * Now we know that a key and cert have been set against the
230: * SSL context
231: */
232: if (!SSL_CTX_check_private_key(ctx)) {
233: BIO_printf(bio_err,
234: "Private key does not match the certificate public key\n");
235: return (0);
236: }
237: }
238: return (1);
239: }
240:
241: int
242: set_cert_key_stuff(SSL_CTX * ctx, X509 * cert, EVP_PKEY * key)
243: {
244: if (cert == NULL)
245: return 1;
246: if (SSL_CTX_use_certificate(ctx, cert) <= 0) {
247: BIO_printf(bio_err, "error setting certificate\n");
248: ERR_print_errors(bio_err);
249: return 0;
250: }
251: if (SSL_CTX_use_PrivateKey(ctx, key) <= 0) {
252: BIO_printf(bio_err, "error setting private key\n");
253: ERR_print_errors(bio_err);
254: return 0;
255: }
256: /*
257: * Now we know that a key and cert have been set against the SSL
258: * context
259: */
260: if (!SSL_CTX_check_private_key(ctx)) {
261: BIO_printf(bio_err,
262: "Private key does not match the certificate public key\n");
263: return 0;
264: }
1.7 jsing 265: return 1;
266: }
267:
268: int
269: ssl_print_tmp_key(BIO *out, SSL *s)
270: {
271: const char *cname;
272: EVP_PKEY *pkey;
273: EC_KEY *ec;
274: int nid;
275:
276: if (!SSL_get_server_tmp_key(s, &pkey))
277: return 0;
278:
279: BIO_puts(out, "Server Temp Key: ");
280: switch (EVP_PKEY_id(pkey)) {
281: case EVP_PKEY_DH:
282: BIO_printf(out, "DH, %d bits\n", EVP_PKEY_bits(pkey));
283: break;
284:
285: case EVP_PKEY_EC:
286: ec = EVP_PKEY_get1_EC_KEY(pkey);
287: nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec));
288: EC_KEY_free(ec);
289:
290: if ((cname = EC_curve_nid2nist(nid)) == NULL)
291: cname = OBJ_nid2sn(nid);
292:
293: BIO_printf(out, "ECDH, %s, %d bits\n", cname, EVP_PKEY_bits(pkey));
294: break;
295:
296: default:
297: BIO_printf(out, "%s, %d bits\n", OBJ_nid2sn(EVP_PKEY_id(pkey)),
298: EVP_PKEY_bits(pkey));
299: }
300:
301: EVP_PKEY_free(pkey);
1.1 jsing 302: return 1;
303: }
304:
305: long
306: bio_dump_callback(BIO * bio, int cmd, const char *argp,
307: int argi, long argl, long ret)
308: {
309: BIO *out;
310:
311: out = (BIO *) BIO_get_callback_arg(bio);
312: if (out == NULL)
313: return (ret);
314:
315: if (cmd == (BIO_CB_READ | BIO_CB_RETURN)) {
316: BIO_printf(out,
317: "read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
318: (void *) bio, argp, (unsigned long) argi, ret, ret);
319: BIO_dump(out, argp, (int) ret);
320: return (ret);
321: } else if (cmd == (BIO_CB_WRITE | BIO_CB_RETURN)) {
322: BIO_printf(out,
323: "write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
324: (void *) bio, argp, (unsigned long) argi, ret, ret);
325: BIO_dump(out, argp, (int) ret);
326: }
327: return (ret);
328: }
329:
330: void
331: apps_ssl_info_callback(const SSL * s, int where, int ret)
332: {
333: const char *str;
334: int w;
335:
336: w = where & ~SSL_ST_MASK;
337:
338: if (w & SSL_ST_CONNECT)
339: str = "SSL_connect";
340: else if (w & SSL_ST_ACCEPT)
341: str = "SSL_accept";
342: else
343: str = "undefined";
344:
345: if (where & SSL_CB_LOOP) {
346: BIO_printf(bio_err, "%s:%s\n", str, SSL_state_string_long(s));
347: } else if (where & SSL_CB_ALERT) {
348: str = (where & SSL_CB_READ) ? "read" : "write";
349: BIO_printf(bio_err, "SSL3 alert %s:%s:%s\n", str,
350: SSL_alert_type_string_long(ret),
351: SSL_alert_desc_string_long(ret));
352: } else if (where & SSL_CB_EXIT) {
353: if (ret == 0)
354: BIO_printf(bio_err, "%s:failed in %s\n",
355: str, SSL_state_string_long(s));
356: else if (ret < 0) {
357: BIO_printf(bio_err, "%s:error in %s\n",
358: str, SSL_state_string_long(s));
359: }
360: }
361: }
362:
363:
364: void
365: msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL * ssl, void *arg)
366: {
367: BIO *bio = arg;
368: const char *str_write_p, *str_version, *str_content_type = "",
369: *str_details1 = "", *str_details2 = "";
370:
371: str_write_p = write_p ? ">>>" : "<<<";
372:
1.13 tb 373: /* XXX convert to using ssl_get_version */
1.1 jsing 374: switch (version) {
375: case SSL2_VERSION:
376: str_version = "SSL 2.0";
377: break;
378: case SSL3_VERSION:
379: str_version = "SSL 3.0 ";
380: break;
381: case TLS1_VERSION:
382: str_version = "TLS 1.0 ";
383: break;
384: case TLS1_1_VERSION:
385: str_version = "TLS 1.1 ";
386: break;
387: case TLS1_2_VERSION:
388: str_version = "TLS 1.2 ";
389: break;
1.12 tb 390: case TLS1_3_VERSION:
391: str_version = "TLS 1.3 ";
392: break;
1.1 jsing 393: case DTLS1_VERSION:
394: str_version = "DTLS 1.0 ";
395: break;
1.15 inoguchi 396: case DTLS1_2_VERSION:
397: str_version = "DTLS 1.2 ";
398: break;
1.1 jsing 399: default:
400: str_version = "???";
401: }
402:
403: if (version == SSL2_VERSION) {
404: str_details1 = "???";
405:
406: if (len > 0) {
1.13 tb 407: /* XXX magic numbers */
1.1 jsing 408: switch (((const unsigned char *) buf)[0]) {
409: case 0:
410: str_details1 = ", ERROR:";
411: str_details2 = " ???";
412: if (len >= 3) {
413: unsigned err = (((const unsigned char *) buf)[1] << 8) + ((const unsigned char *) buf)[2];
414:
415: switch (err) {
416: case 0x0001:
417: str_details2 = " NO-CIPHER-ERROR";
418: break;
419: case 0x0002:
420: str_details2 = " NO-CERTIFICATE-ERROR";
421: break;
422: case 0x0004:
423: str_details2 = " BAD-CERTIFICATE-ERROR";
424: break;
425: case 0x0006:
426: str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
427: break;
428: }
429: }
430: break;
431: case 1:
432: str_details1 = ", CLIENT-HELLO";
433: break;
434: case 2:
435: str_details1 = ", CLIENT-MASTER-KEY";
436: break;
437: case 3:
438: str_details1 = ", CLIENT-FINISHED";
439: break;
440: case 4:
441: str_details1 = ", SERVER-HELLO";
442: break;
443: case 5:
444: str_details1 = ", SERVER-VERIFY";
445: break;
446: case 6:
447: str_details1 = ", SERVER-FINISHED";
448: break;
449: case 7:
450: str_details1 = ", REQUEST-CERTIFICATE";
451: break;
452: case 8:
453: str_details1 = ", CLIENT-CERTIFICATE";
454: break;
455: }
456: }
457: }
458: if (version == SSL3_VERSION || version == TLS1_VERSION ||
459: version == TLS1_1_VERSION || version == TLS1_2_VERSION ||
1.15 inoguchi 460: version == TLS1_3_VERSION || version == DTLS1_VERSION ||
461: version == DTLS1_2_VERSION) {
1.13 tb 462: /* XXX magic numbers are in ssl3.h */
1.1 jsing 463: switch (content_type) {
464: case 20:
465: str_content_type = "ChangeCipherSpec";
466: break;
467: case 21:
468: str_content_type = "Alert";
469: break;
470: case 22:
471: str_content_type = "Handshake";
472: break;
473: }
474:
475: if (content_type == 21) { /* Alert */
476: str_details1 = ", ???";
477:
478: if (len == 2) {
479: switch (((const unsigned char *) buf)[0]) {
480: case 1:
481: str_details1 = ", warning";
482: break;
483: case 2:
484: str_details1 = ", fatal";
485: break;
486: }
487:
488: str_details2 = " ???";
489: switch (((const unsigned char *) buf)[1]) {
490: case 0:
491: str_details2 = " close_notify";
492: break;
493: case 10:
494: str_details2 = " unexpected_message";
495: break;
496: case 20:
497: str_details2 = " bad_record_mac";
498: break;
499: case 21:
500: str_details2 = " decryption_failed";
501: break;
502: case 22:
503: str_details2 = " record_overflow";
504: break;
505: case 30:
506: str_details2 = " decompression_failure";
507: break;
508: case 40:
509: str_details2 = " handshake_failure";
510: break;
511: case 42:
512: str_details2 = " bad_certificate";
513: break;
514: case 43:
515: str_details2 = " unsupported_certificate";
516: break;
517: case 44:
518: str_details2 = " certificate_revoked";
519: break;
520: case 45:
521: str_details2 = " certificate_expired";
522: break;
523: case 46:
524: str_details2 = " certificate_unknown";
525: break;
526: case 47:
527: str_details2 = " illegal_parameter";
528: break;
529: case 48:
530: str_details2 = " unknown_ca";
531: break;
532: case 49:
533: str_details2 = " access_denied";
534: break;
535: case 50:
536: str_details2 = " decode_error";
537: break;
538: case 51:
539: str_details2 = " decrypt_error";
540: break;
541: case 60:
542: str_details2 = " export_restriction";
543: break;
544: case 70:
545: str_details2 = " protocol_version";
546: break;
547: case 71:
548: str_details2 = " insufficient_security";
549: break;
550: case 80:
551: str_details2 = " internal_error";
552: break;
553: case 90:
554: str_details2 = " user_canceled";
555: break;
556: case 100:
557: str_details2 = " no_renegotiation";
558: break;
559: case 110:
560: str_details2 = " unsupported_extension";
561: break;
562: case 111:
563: str_details2 = " certificate_unobtainable";
564: break;
565: case 112:
566: str_details2 = " unrecognized_name";
567: break;
568: case 113:
569: str_details2 = " bad_certificate_status_response";
570: break;
571: case 114:
572: str_details2 = " bad_certificate_hash_value";
573: break;
574: case 115:
575: str_details2 = " unknown_psk_identity";
576: break;
577: }
578: }
579: }
580: if (content_type == 22) { /* Handshake */
581: str_details1 = "???";
582:
583: if (len > 0) {
584: switch (((const unsigned char *) buf)[0]) {
585: case 0:
586: str_details1 = ", HelloRequest";
587: break;
588: case 1:
589: str_details1 = ", ClientHello";
590: break;
591: case 2:
592: str_details1 = ", ServerHello";
593: break;
594: case 3:
595: str_details1 = ", HelloVerifyRequest";
596: break;
1.12 tb 597: case 4:
598: str_details1 = ", NewSessionTicket";
599: break;
600: case 5:
601: str_details1 = ", EndOfEarlyData";
602: break;
603: case 8:
604: str_details1 = ", EncryptedExtensions";
605: break;
1.1 jsing 606: case 11:
607: str_details1 = ", Certificate";
608: break;
609: case 12:
610: str_details1 = ", ServerKeyExchange";
611: break;
612: case 13:
613: str_details1 = ", CertificateRequest";
614: break;
615: case 14:
616: str_details1 = ", ServerHelloDone";
617: break;
618: case 15:
619: str_details1 = ", CertificateVerify";
620: break;
621: case 16:
622: str_details1 = ", ClientKeyExchange";
623: break;
624: case 20:
625: str_details1 = ", Finished";
1.12 tb 626: break;
627: case 24:
628: str_details1 = ", KeyUpdate";
1.1 jsing 629: break;
630: }
631: }
632: }
633: }
634: BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p,
635: str_version, str_content_type, (unsigned long) len,
636: str_details1, str_details2);
637:
638: if (len > 0) {
639: size_t num, i;
640:
641: BIO_printf(bio, " ");
642: num = len;
1.3 doug 643:
1.1 jsing 644: for (i = 0; i < num; i++) {
645: if (i % 16 == 0 && i > 0)
646: BIO_printf(bio, "\n ");
647: BIO_printf(bio, " %02x",
648: ((const unsigned char *) buf)[i]);
649: }
650: if (i < len)
651: BIO_printf(bio, " ...");
652: BIO_printf(bio, "\n");
653: }
654: (void) BIO_flush(bio);
655: }
656:
657: void
658: tlsext_cb(SSL * s, int client_server, int type, unsigned char *data, int len,
659: void *arg)
660: {
661: BIO *bio = arg;
662: char *extname;
663:
664: switch (type) {
665: case TLSEXT_TYPE_server_name:
666: extname = "server name";
667: break;
668:
669: case TLSEXT_TYPE_max_fragment_length:
670: extname = "max fragment length";
671: break;
672:
673: case TLSEXT_TYPE_client_certificate_url:
674: extname = "client certificate URL";
675: break;
676:
677: case TLSEXT_TYPE_trusted_ca_keys:
678: extname = "trusted CA keys";
679: break;
680:
681: case TLSEXT_TYPE_truncated_hmac:
682: extname = "truncated HMAC";
683: break;
684:
685: case TLSEXT_TYPE_status_request:
686: extname = "status request";
687: break;
688:
689: case TLSEXT_TYPE_user_mapping:
690: extname = "user mapping";
691: break;
692:
693: case TLSEXT_TYPE_client_authz:
694: extname = "client authz";
695: break;
696:
697: case TLSEXT_TYPE_server_authz:
698: extname = "server authz";
699: break;
700:
701: case TLSEXT_TYPE_cert_type:
702: extname = "cert type";
703: break;
704:
1.11 jsing 705: case TLSEXT_TYPE_supported_groups:
706: extname = "supported groups";
1.1 jsing 707: break;
708:
709: case TLSEXT_TYPE_ec_point_formats:
710: extname = "EC point formats";
711: break;
712:
713: case TLSEXT_TYPE_srp:
714: extname = "SRP";
715: break;
716:
717: case TLSEXT_TYPE_signature_algorithms:
718: extname = "signature algorithms";
719: break;
720:
721: case TLSEXT_TYPE_use_srtp:
722: extname = "use SRTP";
723: break;
724:
725: case TLSEXT_TYPE_heartbeat:
726: extname = "heartbeat";
727: break;
728:
1.14 inoguchi 729: case TLSEXT_TYPE_application_layer_protocol_negotiation:
730: extname = "application layer protocol negotiation";
731: break;
732:
733: case TLSEXT_TYPE_padding:
734: extname = "TLS padding";
735: break;
736:
1.1 jsing 737: case TLSEXT_TYPE_session_ticket:
738: extname = "session ticket";
739: break;
740:
1.14 inoguchi 741: #if defined(LIBRESSL_HAS_TLS1_3) || defined(LIBRESSL_INTERNAL)
742: case TLSEXT_TYPE_pre_shared_key:
743: extname = "pre shared key";
744: break;
745:
746: case TLSEXT_TYPE_early_data:
747: extname = "early data";
748: break;
749:
750: case TLSEXT_TYPE_supported_versions:
751: extname = "supported versions";
752: break;
753:
754: case TLSEXT_TYPE_cookie:
755: extname = "cookie";
756: break;
757:
758: case TLSEXT_TYPE_psk_key_exchange_modes:
759: extname = "PSK key exchange modes";
760: break;
761:
762: case TLSEXT_TYPE_certificate_authorities:
763: extname = "certificate authorities";
764: break;
765:
766: case TLSEXT_TYPE_oid_filters:
767: extname = "OID filters";
768: break;
769:
770: case TLSEXT_TYPE_post_handshake_auth:
771: extname = "post handshake auth";
772: break;
773:
774: case TLSEXT_TYPE_signature_algorithms_cert:
775: extname = "signature algorithms cert";
1.9 inoguchi 776: break;
777:
1.14 inoguchi 778: case TLSEXT_TYPE_key_share:
779: extname = "key share";
1.9 inoguchi 780: break;
1.14 inoguchi 781: #endif
1.9 inoguchi 782:
1.14 inoguchi 783: case TLSEXT_TYPE_renegotiate:
784: extname = "renegotiation info";
1.1 jsing 785: break;
786:
787: default:
788: extname = "unknown";
789: break;
790:
791: }
792:
793: BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
794: client_server ? "server" : "client", extname, type, len);
795: BIO_dump(bio, (char *) data, len);
796: (void) BIO_flush(bio);
797: }
798:
799: int
800: generate_cookie_callback(SSL * ssl, unsigned char *cookie,
801: unsigned int *cookie_len)
802: {
803: unsigned char *buffer, result[EVP_MAX_MD_SIZE];
804: unsigned int length, resultlength;
805: union {
806: struct sockaddr sa;
807: struct sockaddr_in s4;
808: struct sockaddr_in6 s6;
809: } peer;
810:
811: /* Initialize a random secret */
812: if (!cookie_initialized) {
1.2 jsing 813: arc4random_buf(cookie_secret, COOKIE_SECRET_LENGTH);
1.1 jsing 814: cookie_initialized = 1;
815: }
816: /* Read peer information */
817: (void) BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
818:
819: /* Create buffer with peer's address and port */
820: length = 0;
821: switch (peer.sa.sa_family) {
822: case AF_INET:
823: length += sizeof(struct in_addr);
824: length += sizeof(peer.s4.sin_port);
825: break;
826: case AF_INET6:
827: length += sizeof(struct in6_addr);
828: length += sizeof(peer.s6.sin6_port);
829: break;
830: default:
831: OPENSSL_assert(0);
832: break;
833: }
834: buffer = malloc(length);
835:
836: if (buffer == NULL) {
837: BIO_printf(bio_err, "out of memory\n");
838: return 0;
839: }
840: switch (peer.sa.sa_family) {
841: case AF_INET:
842: memcpy(buffer, &peer.s4.sin_port, sizeof(peer.s4.sin_port));
843: memcpy(buffer + sizeof(peer.s4.sin_port),
844: &peer.s4.sin_addr, sizeof(struct in_addr));
845: break;
846: case AF_INET6:
847: memcpy(buffer, &peer.s6.sin6_port, sizeof(peer.s6.sin6_port));
848: memcpy(buffer + sizeof(peer.s6.sin6_port),
849: &peer.s6.sin6_addr, sizeof(struct in6_addr));
850: break;
851: default:
852: OPENSSL_assert(0);
853: break;
854: }
855:
856: /* Calculate HMAC of buffer using the secret */
857: HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
858: buffer, length, result, &resultlength);
859: free(buffer);
860:
861: memcpy(cookie, result, resultlength);
862: *cookie_len = resultlength;
863:
864: return 1;
865: }
866:
867: int
1.10 tb 868: verify_cookie_callback(SSL * ssl, const unsigned char *cookie,
869: unsigned int cookie_len)
1.1 jsing 870: {
871: unsigned char *buffer, result[EVP_MAX_MD_SIZE];
872: unsigned int length, resultlength;
873: union {
874: struct sockaddr sa;
875: struct sockaddr_in s4;
876: struct sockaddr_in6 s6;
877: } peer;
878:
879: /* If secret isn't initialized yet, the cookie can't be valid */
880: if (!cookie_initialized)
881: return 0;
882:
883: /* Read peer information */
884: (void) BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
885:
886: /* Create buffer with peer's address and port */
887: length = 0;
888: switch (peer.sa.sa_family) {
889: case AF_INET:
890: length += sizeof(struct in_addr);
891: length += sizeof(peer.s4.sin_port);
892: break;
893: case AF_INET6:
894: length += sizeof(struct in6_addr);
895: length += sizeof(peer.s6.sin6_port);
896: break;
897: default:
898: OPENSSL_assert(0);
899: break;
900: }
901: buffer = malloc(length);
902:
903: if (buffer == NULL) {
904: BIO_printf(bio_err, "out of memory\n");
905: return 0;
906: }
907: switch (peer.sa.sa_family) {
908: case AF_INET:
909: memcpy(buffer, &peer.s4.sin_port, sizeof(peer.s4.sin_port));
910: memcpy(buffer + sizeof(peer.s4.sin_port),
911: &peer.s4.sin_addr, sizeof(struct in_addr));
912: break;
913: case AF_INET6:
914: memcpy(buffer, &peer.s6.sin6_port, sizeof(peer.s6.sin6_port));
915: memcpy(buffer + sizeof(peer.s6.sin6_port),
916: &peer.s6.sin6_addr, sizeof(struct in6_addr));
917: break;
918: default:
919: OPENSSL_assert(0);
920: break;
921: }
922:
923: /* Calculate HMAC of buffer using the secret */
924: HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
925: buffer, length, result, &resultlength);
926: free(buffer);
927:
928: if (cookie_len == resultlength &&
929: memcmp(result, cookie, resultlength) == 0)
930: return 1;
931:
932: return 0;
933: }